cros: allow aura window not considered activatable for pointer event

ash/wm/ash_focus_rules.h

Index: ash/wm/ash_focus_rules.h
diff --git a/ash/wm/ash_focus_rules.h b/ash/wm/ash_focus_rules.h
index 97546cd7e977d34c2f6766cd1c0583e77cc77072..76242bf2a74e9df07f00aa2c68bfc0a157422326 100644
--- a/ash/wm/ash_focus_rules.h
+++ b/ash/wm/ash_focus_rules.h
@@ -18,9 +18,12 @@ class ASH_EXPORT AshFocusRules : public ::wm::BaseFocusRules {
   AshFocusRules();
   ~AshFocusRules() override;
 
-  // Tests if the given |window| can be activated, ignoring the system modal
-  // dialog state.
-  bool IsWindowConsideredActivatable(aura::Window* window) const;
+  // Set whether |window| should be activated on pointer. On Chrome OS, window

[sky, 2017/04/12 19:49:16]

pointer -> point events

[Qiang(Joe) Xu, 2017/04/12 23:00:41]

Done.

+  // can be activated from input event, such as mouse pressed or single point
+  // gesture tap. If |activate_on_pointer| is false, we disable the default
+  // activation rule for |window|.

[sky, 2017/04/12 19:49:16]

Document what the default is.

[Qiang(Joe) Xu, 2017/04/12 23:00:41]

Done.

+  static void SetActivateOnPointer(aura::Window* window,
+                                   bool activate_on_pointer);
 
  private:
   // ::wm::BaseFocusRules:
@@ -29,6 +32,7 @@ class ASH_EXPORT AshFocusRules : public ::wm::BaseFocusRules {
   bool IsWindowConsideredVisibleForActivation(
       aura::Window* window) const override;
   bool CanActivateWindow(aura::Window* window) const override;
+  bool CanFocusWindow(aura::Window* window, ui::Event* event) const override;
   aura::Window* GetNextActivatableWindow(aura::Window* ignore) const override;
 
   aura::Window* GetTopmostWindowToActivateForContainerIndex(